2X(g) + Y(g) &#8594; Z(g). in the equation the rate of formation of Z is found to be independent of the concentration of Y and to quadrupe when the concentration of X is doubled. The correct rate equation for the reaction is

The standard enthalpies of formation of CO2(g), H2O(g) and CO(g) in kJ mol-1 are -394, -242 and -110 respectively. What is the standard ethalphy change for the reaction CO(g) - H2O(g) &#8594; CO2 + H2(g)

The data in the table above shows the rate of reaction of nitrogen (II) oxide with chlorine at 250C. It can be concluded that doubling initial concentration of NO increases the rate of reaction by a factor of